Bug: display Blog(EN) page has two duplicate articles

[SylviaBABY]

Actual Behaviour

Now the Blog page has two duplicate articles about the CVE-2021-43557 announcement

Expected Behaviour

The page should display the two pieces of content in order：

1. https://apisix.apache.org/blog/2021/11/23/cve-2021-43557-research-report/
2. https://apisix.apache.org/blog/2021/11/23/cve-2021-43557/

Steps to reproduce it

Screenshots of the issue

Would you like to work on the issue?

No，need another person help to check.